By "full node" I'm guessing that you are running Core? If an alternative implementation, then which one? I think BTC1 is the only full node implementation that will fork to 2x. As long as you are running any version of Core, you will reject the 2x fork, since it's a hard fork (incompatible with the previous versions).

That's why most people just say "run a full node" if you want to ignore the 2x chain entirely. If you just run Core and ignore the 2x chain, you don't run any risk of losing BTC. But you'll probably lose B2X coins since there is no replay protection.